NJU8753 Datasheet, PDF (1/7 Pages) List of Unclassifed Manufacturers – Analog Signal Input Class D Amplifier

NJU8753
PRELIMINARY
Analog Signal Input Class D Amplifier
with DC-DC Converter for Piezo Speaker
GENERAL DESCRIPTION
The NJU8753 is an analog signal input class D power
amplifier with DC-DC converter for Piezo speaker. Input
part operates on 2.85V(typ) and a built-in DC-DC
converter generates variable output voltage(up to 12V)
with input voltage(2.6 to 4.2V). Therefore, it drives
Piezo speaker with louder sound and high efficiency.
The NJU8753 incorporates BTL amplifier, which
eliminate AC coupling capacitors, capable of driving
monaural Piezo speaker with simple external LC
low-pass filters.
Class D operation achieves lower power operation for
Piezo speaker, thus the NJU8753 is suited for battery-
powered applications.
PACKAGE OUTLINE
NJU8753KN1
FEATURES
Piezo Speaker Driving
Output voltage: 8Vrms(Typ.) @V_DDO=10.0V
1-channel Analog Signal Input, 1-channel BTL output
Standby(Hi-Z),
Built-in DC-DC Converter
Built-in Low Voltage Detector
Built-in Short Protector
Operating Voltage
CMOS Technology
:2.6~3.6V(V_DD, V_REG)
:2.6~4.2V(V_BAT)
Package Outline
:QFN28
PIN CONFIGURATION
28
1
TEST1
TEST3
VREG
FB
VSS
VSS1
VSS1
VDDO
OUTP
VSS
NC
VSS
OUTN
VDDO
QFN28
Ver.2003-09-26
-1-